Tricks of the trade are all in a day's work for sexy Madam Xaviera Hollander in the 3-disc collection of "The Happy Hooker Trilogy." In "The Happy Hooker" (1975) Oscar-nominee Lynn Redgrave portrays the once naïve office temp-turned-temptress who opens the most popular brothel in New York. In "The Happy Hooker Goes to Washington" (1977), Joey Heatherton plays the now-legendary Xaviera, called to testify before Congress and featuring George Hamilton and Ray Walston in campy costarring roles. "The Happy Hooker Goes to Hollywood" (1980) brings two-time Bond Girl Martine Beswicke to the screen as the vampy Hollander, who takes matters into her own hands after a pair of sleazy Tinseltown producers try to give her the shaft.